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[/] [openrisc/] [trunk/] [gnu-stable/] [binutils-2.20.1/] [bfd/] [ptrace-core.c] - Blame information for rev 818

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1 205 julius
/* BFD backend for core files which use the ptrace_user structure
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   Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2001, 2002, 2003, 2004,
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   2005, 2006, 2007  Free Software Foundation, Inc.
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   The structure of this file is based on trad-core.c written by John Gilmore
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   of Cygnus Support.
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   Modified to work with the ptrace_user structure by Kevin A. Buettner.
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   (Longterm it may be better to merge this file with trad-core.c)
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   This file is part of BFD, the Binary File Descriptor library.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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21
   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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#ifdef PTRACE_CORE
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include <sys/ptrace.h>
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struct trad_core_struct
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  {
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    asection *data_section;
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    asection *stack_section;
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    asection *reg_section;
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    struct ptrace_user u;
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  };
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#define core_upage(bfd) (&((bfd)->tdata.trad_core_data->u))
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#define core_datasec(bfd) ((bfd)->tdata.trad_core_data->data_section)
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#define core_stacksec(bfd) ((bfd)->tdata.trad_core_data->stack_section)
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#define core_regsec(bfd) ((bfd)->tdata.trad_core_data->reg_section)
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/* forward declarations */
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const bfd_target *ptrace_unix_core_file_p PARAMS ((bfd *abfd));
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char * ptrace_unix_core_file_failing_command PARAMS ((bfd *abfd));
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int ptrace_unix_core_file_failing_signal PARAMS ((bfd *abfd));
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#define ptrace_unix_core_file_matches_executable_p generic_core_file_matches_executable_p
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static void swap_abort PARAMS ((void));
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const bfd_target *
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ptrace_unix_core_file_p (abfd)
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     bfd *abfd;
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{
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  int val;
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  struct ptrace_user u;
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  struct trad_core_struct *rawptr;
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  bfd_size_type amt;
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  flagword flags;
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  val = bfd_bread ((void *)&u, (bfd_size_type) sizeof u, abfd);
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  if (val != sizeof u || u.pt_magic != _BCS_PTRACE_MAGIC
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      || u.pt_rev != _BCS_PTRACE_REV)
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    {
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      /* Too small to be a core file */
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      bfd_set_error (bfd_error_wrong_format);
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      return 0;
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    }
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  /* OK, we believe you.  You're a core file (sure, sure).  */
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  /* Allocate both the upage and the struct core_data at once, so
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     a single free() will free them both.  */
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  amt = sizeof (struct trad_core_struct);
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  rawptr = (struct trad_core_struct *) bfd_zalloc (abfd, amt);
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85
  if (rawptr == NULL)
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    return 0;
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  abfd->tdata.trad_core_data = rawptr;
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  rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
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  /* Create the sections.  */
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  flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
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  core_stacksec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".stack",
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                                                             flags);
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  if (core_stacksec (abfd) == NULL)
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    goto fail;
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  core_datasec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".data",
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                                                            flags);
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  if (core_datasec (abfd) == NULL)
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    goto fail;
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  core_regsec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg",
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                                                           SEC_HAS_CONTENTS);
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  if (core_regsec (abfd) == NULL)
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    goto fail;
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  /* FIXME:  Need to worry about shared memory, library data, and library
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     text.  I don't think that any of these things are supported on the
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     system on which I am developing this for though.  */
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  core_datasec (abfd)->size =  u.pt_dsize;
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  core_stacksec (abfd)->size = u.pt_ssize;
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  core_regsec (abfd)->size = sizeof (u);
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  core_datasec (abfd)->vma = u.pt_o_data_start;
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  core_stacksec (abfd)->vma = USRSTACK - u.pt_ssize;
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  core_regsec (abfd)->vma = 0 - sizeof (u);      /* see trad-core.c */
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  core_datasec (abfd)->filepos = (int) u.pt_dataptr;
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  core_stacksec (abfd)->filepos = (int) (u.pt_dataptr + u.pt_dsize);
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  core_regsec (abfd)->filepos = 0; /* Register segment is ptrace_user */
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124
  /* Align to word at least */
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  core_stacksec (abfd)->alignment_power = 2;
126
  core_datasec (abfd)->alignment_power = 2;
127
  core_regsec (abfd)->alignment_power = 2;
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129
  return abfd->xvec;
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131
 fail:
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  bfd_release (abfd, abfd->tdata.any);
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  abfd->tdata.any = NULL;
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  bfd_section_list_clear (abfd);
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  return NULL;
136
}
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138
char *
139
ptrace_unix_core_file_failing_command (abfd)
140
     bfd *abfd;
141
{
142
  char *com = abfd->tdata.trad_core_data->u.pt_comm;
143
  if (*com)
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    return com;
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  else
146
    return 0;
147
}
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149
int
150
ptrace_unix_core_file_failing_signal (abfd)
151
     bfd *abfd;
152
{
153
  return abfd->tdata.trad_core_data->u.pt_sigframe.sig_num;
154
}
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156
/* If somebody calls any byte-swapping routines, shoot them.  */
157
static void
158
swap_abort ()
159
{
160
  abort (); /* This way doesn't require any declaration for ANSI to fuck up */
161
}
162
 
163
#define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
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#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
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#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
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#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
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#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
168
#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
169
 
170
const bfd_target ptrace_core_vec =
171
  {
172
    "trad-core",
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    bfd_target_unknown_flavour,
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    BFD_ENDIAN_UNKNOWN,         /* target byte order */
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    BFD_ENDIAN_UNKNOWN,         /* target headers byte order */
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    (HAS_RELOC | EXEC_P |       /* object flags */
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     HAS_LINENO | HAS_DEBUG |
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     HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
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    (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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    0,                                                      /* symbol prefix */
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    ' ',                                                   /* ar_pad_char */
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    16,                                                    /* ar_max_namelen */
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    NO_GET64, NO_GETS64, NO_PUT64,      /* 64 bit data */
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    NO_GET, NO_GETS, NO_PUT,            /* 32 bit data */
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    NO_GET, NO_GETS, NO_PUT,            /* 16 bit data */
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    NO_GET64, NO_GETS64, NO_PUT64,      /* 64 bit hdrs */
187
    NO_GET, NO_GETS, NO_PUT,            /* 32 bit hdrs */
188
    NO_GET, NO_GETS, NO_PUT,            /* 16 bit hdrs */
189
 
190
    {                           /* bfd_check_format */
191
      _bfd_dummy_target,                /* unknown format */
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      _bfd_dummy_target,                /* object file */
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      _bfd_dummy_target,                /* archive */
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      ptrace_unix_core_file_p           /* a core file */
195
    },
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    {                           /* bfd_set_format */
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      bfd_false, bfd_false,
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      bfd_false, bfd_false
199
    },
200
    {                           /* bfd_write_contents */
201
      bfd_false, bfd_false,
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      bfd_false, bfd_false
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    },
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205
    BFD_JUMP_TABLE_GENERIC (_bfd_generic),
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    BFD_JUMP_TABLE_COPY (_bfd_generic),
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    BFD_JUMP_TABLE_CORE (ptrace_unix),
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    BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
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    BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
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    BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
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    BFD_JUMP_TABLE_WRITE (_bfd_generic),
212
    BFD_JUMP_TABLE_LINK (_bfd_nolink),
213
    BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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215
    NULL,
216
 
217
    (PTR) 0                      /* backend_data */
218
  };
219
 
220
#endif /* PTRACE_CORE */

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